Allied & ICAR Exam Bank • ALLIED_1750 MCQ • 2 Marks

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Ratios & Percentages

Question Statement:

The ratio of present ages of A and B is 3:4. Ten years ago, the ratio of their ages was 1:2. The present age of B is:

Options:

  • (A) 20 years
  • (B) 24 years
  • (C) 18 years
  • (D) 25 years

Answer Key:

A

Step-by-Step Solution & Explanation

$(3x - 10)/(4x - 10) = 1/2 \implies 6x - 20 = 4x - 10 \implies 2x = 10 \implies x = 5$. B's present age $= 4 \times 5 = 20$ years.
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